/**
 * Copyright (C) 2016 Fuzhou Rockchip Electronics Co., Ltd
 * author: Benjo Lei <benjo.lei@rock-chips.com>
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include "wifi_ota_interface.h"

#include <stdio.h>
#include <string.h>

#include <unistd.h>
#include <netinet/in.h>
#include <sys/ioctl.h>
#include <sys/stat.h>

#include "wifi_management.h"
#include "wifi_setting_interface.h"
#include "wlan_service_client.h"
#include "fs_manage/fs_storage.h"
#include "init_hook.h"


#define BUFFER_SIZE 4096
#define UPLOADPORT 18890
#define CMD_BUFFER_SIZE 128

static int tcp_upload_socket = -1;
static int tcp_upload_ts_socket = -1;

static const char *firmware_folder = "/mnt/sdcard/Firmware.img";

static const unsigned long int crc32tab[] = {
	0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL,
	0x076dc419L, 0x706af48fL, 0xe963a535L, 0x9e6495a3L,
	0x0edb8832L, 0x79dcb8a4L, 0xe0d5e91eL, 0x97d2d988L,
	0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, 0x90bf1d91L,
	0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
	0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L,
	0x136c9856L, 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL,
	0x14015c4fL, 0x63066cd9L, 0xfa0f3d63L, 0x8d080df5L,
	0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, 0xa2677172L,
	0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
	0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L,
	0x32d86ce3L, 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L,
	0x26d930acL, 0x51de003aL, 0xc8d75180L, 0xbfd06116L,
	0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L, 0xb8bda50fL,
	0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
	0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL,
	0x76dc4190L, 0x01db7106L, 0x98d220bcL, 0xefd5102aL,
	0x71b18589L, 0x06b6b51fL, 0x9fbfe4a5L, 0xe8b8d433L,
	0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, 0xe10e9818L,
	0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
	0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL,
	0x6c0695edL, 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L,
	0x65b0d9c6L, 0x12b7e950L, 0x8bbeb8eaL, 0xfcb9887cL,
	0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, 0xfbd44c65L,
	0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
	0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL,
	0x4369e96aL, 0x346ed9fcL, 0xad678846L, 0xda60b8d0L,
	0x44042d73L, 0x33031de5L, 0xaa0a4c5fL, 0xdd0d7cc9L,
	0x5005713cL, 0x270241aaL, 0xbe0b1010L, 0xc90c2086L,
	0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
	0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L,
	0x59b33d17L, 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL,
	0xedb88320L, 0x9abfb3b6L, 0x03b6e20cL, 0x74b1d29aL,
	0xead54739L, 0x9dd277afL, 0x04db2615L, 0x73dc1683L,
	0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
	0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L,
	0xf00f9344L, 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL,
	0xf762575dL, 0x806567cbL, 0x196c3671L, 0x6e6b06e7L,
	0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, 0x67dd4accL,
	0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
	0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L,
	0xd1bb67f1L, 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL,
	0xd80d2bdaL, 0xaf0a1b4cL, 0x36034af6L, 0x41047a60L,
	0xdf60efc3L, 0xa867df55L, 0x316e8eefL, 0x4669be79L,
	0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
	0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL,
	0xc5ba3bbeL, 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L,
	0xc2d7ffa7L, 0xb5d0cf31L, 0x2cd99e8bL, 0x5bdeae1dL,
	0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, 0x026d930aL,
	0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
	0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L,
	0x92d28e9bL, 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L,
	0x86d3d2d4L, 0xf1d4e242L, 0x68ddb3f8L, 0x1fda836eL,
	0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, 0x18b74777L,
	0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
	0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L,
	0xa00ae278L, 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L,
	0xa7672661L, 0xd06016f7L, 0x4969474dL, 0x3e6e77dbL,
	0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L, 0x37d83bf0L,
	0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
	0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L,
	0xbad03605L, 0xcdd70693L, 0x54de5729L, 0x23d967bfL,
	0xb3667a2eL, 0xc4614ab8L, 0x5d681b02L, 0x2a6f2b94L,
	0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, 0x2d02ef8dL
};

int filecrc32(const char *path, unsigned long int *crc)
{
	unsigned char buf[BUFFER_SIZE] = {0};
	unsigned long int size;
	unsigned long int i;
	unsigned long int count = 0;
	unsigned long int tmp;
	FILE *fp = NULL;

	fp = fopen(path, "rb");
	if (fp == NULL) {
		printf("crc open file fault %s\n", path);
		return -1;
	}

	tmp = 0xFFFFFFFF;
	while ((size = fread(buf, 1, BUFFER_SIZE, fp)) > 0) {
		for (i = 0; i < size; i++)
			tmp = crc32tab[(tmp ^ buf[i]) & 0xff] ^ (tmp >> 8);
		count += size;
	}

	fclose(fp);
	*crc = tmp ^ 0xFFFFFFFF;
	return 0;
}

int tcp_func_ota_updata(int nfp, char *buffer)
{
	char updata_cmd[CMD_BUFFER_SIZE] = {0};
	char *p;
	unsigned long int crc;

	printf("OTA Updata ....\n");

	if (access(firmware_folder, R_OK) == 0) {
		printf("%s\n", updata_cmd);
#if 0
		snprintf(updata_cmd, CMD_BUFFER_SIZE,
			 "fwupdate_main -i %s -d /tmp -t 3 -r 1 -T 0",
			 firmware_folder);
		runapp(updata_cmd);
#else
		/* The BOOT_FWUPDATE which is defined in init_hook.h */
		printf("will reboot and update...\n");
		parameter_flash_set_flashed(BOOT_FWUPDATE);
		power_reboot();
#endif
		return 0;
	}

	printf("%s can't read\n", firmware_folder);
	return -1;
}

int tcp_func_upload_file(int nfp, char *buffer)
{
	char updata_cmd[CMD_BUFFER_SIZE] = {0};
	char rvbuffer[BUFFER_SIZE] = {0};
	int nCount = -1;
	int sin_size;
	FILE *fp = NULL;
	struct sockaddr_in s_add, c_add;
	int opt = 1;
	char *p;
	unsigned long int crc32 , CRCTemp;

	p = strstr(buffer, "CRC:");
	if (p == NULL)
		return -1;

	sscanf(&p[4], "%x", &crc32);

	tcp_upload_socket = socket(AF_INET, SOCK_STREAM, 0);
	if (tcp_upload_socket < 0) {
		perror("socket fail !");
		goto stop_tcp_upload_server;
	}
	if (setsockopt(tcp_upload_socket, SOL_SOCKET, SO_REUSEADDR, (char *)&opt,
		       sizeof(opt)) < 0) {
		perror("SO_REUSEADDR");
		goto stop_tcp_upload_server;
	}
	printf("socket ok !\r\n");

	bzero(&s_add, sizeof(struct sockaddr_in));
	s_add.sin_family = AF_INET;
	s_add.sin_addr.s_addr = INADDR_ANY;
	s_add.sin_port = htons(UPLOADPORT);
	if (bind(tcp_upload_socket, (struct sockaddr *)(&s_add),
		 sizeof(struct sockaddr)) < 0) {
		perror("bind fail !");
		goto stop_tcp_upload_server;
	}
	printf("bind ok !\r\n");
	if (listen(tcp_upload_socket, 1) < 0) {
		perror("listen fail !");
		goto stop_tcp_upload_server;
	}

	if (0 >  write(nfp, "CMD_ACK_OTA_Upload_File",
		       strlen("CMD_ACK_OTA_Upload_File")))
		goto stop_tcp_upload_server;
	printf("listen ok\r\n");

	while (get_g_wifi_is_running()) {
		sin_size = sizeof(struct sockaddr_in);
		tcp_upload_ts_socket = accept(tcp_upload_socket, (struct sockaddr *)(&c_add),
					      &sin_size);
		if (tcp_upload_ts_socket < 0) {
			perror("accept fail!");
			goto stop_tcp_upload_server;
		}
		printf("accept ok!\r\nServer get connect from %#x : %#x\r\n",
		       ntohl(c_add.sin_addr.s_addr), ntohs(c_add.sin_port));

		fp = fopen(firmware_folder, "w+");
		if (fp == NULL) {
			printf("Cannot open file, press any key to exit!\n");
			goto stop_tcp_upload_server;
		}

		while ((nCount = recv(tcp_upload_ts_socket, rvbuffer, BUFFER_SIZE, 0)) > 0)
			fwrite(rvbuffer, nCount, 1, fp);
		fclose(fp);
		fp = NULL;
		runapp("sync");

		if (filecrc32(firmware_folder, &CRCTemp)) {
			printf("CRC check fault\n");
			remove(firmware_folder);
			goto stop_tcp_upload_server;
		}
		if (crc32 == CRCTemp) {
			if (0 >  write(nfp, "CMD_ACK_OTA_Upload_Success",
				       strlen("CMD_ACK_OTA_Upload_Success")))
				goto stop_tcp_upload_server;
		} else {
			if (0 >  write(nfp, "CMD_ACK_OTA_Upload_Fault",
				       strlen("CMD_ACK_OTA_Upload_Fault"))) {
				remove(firmware_folder);
				goto stop_tcp_upload_server;
			}
		}

		printf("tcp_func_upload_file : close fp, close socket\n");

		if (tcp_upload_ts_socket >= 0) {
			close(tcp_upload_ts_socket);
			tcp_upload_ts_socket = -1;
		}
		if (tcp_upload_socket >= 0) {
			close(tcp_upload_socket);
			tcp_upload_socket = -1;
		}

		return 0;
	}

stop_tcp_upload_server:
	printf("tcp_func_upload_file : close fp, close socket\n");
	if (tcp_upload_ts_socket >= 0) {
		close(tcp_upload_ts_socket);
		tcp_upload_ts_socket = -1;
	}
	if (tcp_upload_socket >= 0) {
		close(tcp_upload_socket);
		tcp_upload_socket = -1;
	}
	if (fp != NULL)
		fclose(fp);
	return -1;
}
